Korloy SNMG120408-HA PC9030 0.8mm Sharp Edge Turning Insert for Stainless (10pcs)
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The Original Korloy SNMG120408-HA PC9030 is a high-performance Double-Sided Square Turning Insert engineered for the challenges of Stainless Steel (M-Group) and Super Alloys. Featuring a reinforced 0.8mm Corner Radius and the legendary -HA (High-Sharpness) chipbreaker, this insert is designed to minimize cutting resistance and heat generation. The PC9030 PVD Coating provides a superior thermal barrier, preventing "Built-Up Edge" (BUE) in gummy materials like 304, 316L, and Titanium alloys.
8-Edge High Productivity: Why compromise on cost? The SNMG120408-HA gives you 8 usable cutting edges. When machining large stainless components, the 0.8mm radius ensures the tool tip stays cool and intact, while the HA geometry prevents the material from "welding" to the insert.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG120408-HA |
| Corner Radius | 0.8 mm (Durability & Finish) |
| Chipbreaker | -HA (Sharp Edge / Low Resistance) |
| Grade | PC9030 (PVD Specialty for Tough Materials) |
Core Performance Benefits:
- Reduced Work Hardening: The ultra-sharp HA edge shears the material cleanly, preventing the surface of stainless steel from hardening before the next pass.
- Superior Toughness: 0.8mm radius provides the structural strength needed for medium-duty turning and light interrupted cuts.
- Advanced PVD Shield: PC9030 coating resists chemical adhesion, crucial for machining nickel-based alloys and 300-series stainless.
- Excellent Chip Control: Even at varying depths of cut, the HA geometry ensures chips are curled and broken away from the workpiece.
Recommended Cutting Parameters (Stainless Steel & Alloys):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| 304 / 316 Stainless | 90 - 170 m/min | 0.15 - 0.35 mm/rev | 0.8 - 4.0 mm |
| Duplex Stainless | 50 - 100 m/min | 0.12 - 0.25 mm/rev | 0.5 - 3.0 mm |
| Titanium (Gr. 5) | 40 - 85 m/min | 0.10 - 0.22 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
Precision matched for all 12.7mm IC negative tool holders:
- External Turning (Standard): MSSNR 2525M12 / 3232P12
- Internal Boring Bars: S32T-MSSNR12 / S40U-MSSNR12
Machinist Tip: Why SNMG120408-HA is the Pro's Choice
Optimizing results for tough alloy turning:
Anti-Vibration. The HA geometry is significantly sharper than the GS or HM versions. This lowers cutting pressure, making it the best SNMG choice for deep boring or thin-wall stainless turning where chatter is common.
Better Thermal Mass. The 0.8mm radius handles the heat of stainless steel machining better than a 0.4mm tip. It allows for faster feeds ($fn$), which helps push the heat into the chip rather than the tool.
Pro Advice: When using SNMG120408-HA PC9030, always maintain a Depth of Cut ($ap$) of at least 0.5mm. This ensures the chipbreaker is fully engaged and the tool is cutting under the surface skin of the material.
Packaging: 10 pieces per box.
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